How to upgrade tecno d3 phones to version 4?

— If it is saying that it is updated, it means that there isn't a newer version...

— There are custom ways to root this phone using standalone installers. If you...

— The only way to update the phone is through the About phone > Software...

— Firstly, turn off your Tecno D3 device. After that, press and hold Volume Up +...

— This phone is powered by Android operating system which means that you are...

— Yes, you can reset the PIN of a Tecno S7C phone by following these steps: Go to...